PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

200-957Lens,secondary

Biomarine Inc · NSN 4220-01-120-2807 · FSC 4220 · No Item Name Available
Verified by PartsTable
NSN 4220-01-120-2807 — this item is cataloged by the U.S. Government under National Stock Number 4220-01-120-2807. Primary manufacturer part number: 200-957.
Features
  • Lens,secondary — FSC 4220
  • General Characteristics Item Description: PLASTIC,POLYCARBONATE; CLEAR; 2.118 IN. MIN 2.122 IN. MAX OD; 0.375 IN. LG; RECESSED SECTION 1.903 IN. MAX OD BY 0.192 IN. MAX LG IN
  • 2 verified cross-references
  • Primary manufacturer: Biomarine Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Lens,secondary, cataloged under National Stock Number 4220-01-120-2807, is classified within Federal Supply Class 4220 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Biomarine Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4220-01-120-2807
Primary Part Number200-957
Item NameLens,secondary
FSC / FSG4220 / 42 — No Item Name Available
ManufacturerBiomarine Inc
StatusACTIVE
General Characteristics Item DescriptionPLASTIC,POLYCARBONATE; CLEAR; 2.118 IN. MIN 2.122 IN. MAX OD; 0.375 IN. LG; RECESSED SECTION 1.903 IN. MAX OD BY 0.192 IN. MAX LG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-00-171-9220 INTERCHANGEABLE
Retainer,packing
3120-01-583-544220-095-7 INTERCHANGEABLE
Bearing,plain,self-Aligning
New Hampshire Ball Bearings Inc Div Astro Division
Cross-Reference Index
Part NumberManufacturer
200-957 Mar-Vel International, Inc. Dba Mar-Vel Underwater Equip (USA)
200-957 PRIMARY Biomarine Inc (USA)
Related Parts
5330-00-171-9220INTERCHANGEABLE
RETAINER,PACKING
3120-01-583-5442INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
20-095-7

Frequently Asked Questions

What is NSN 4220-01-120-2807?

NSN 4220-01-120-2807 is a Lens,secondary, manufactured by Biomarine Inc, classified under FSC 4220 (No Item Name Available). Status: active.

What are the part numbers for NSN 4220-01-120-2807?

NSN 4220-01-120-2807 has 2 cross-referenced part numbers: 200-957 (Mar-Vel International, Inc. Dba Mar-Vel Underwater Equip), 200-957 (Biomarine Inc).

What NSN replaces 4220-01-120-2807?

There are 2 known substitutes for 4220-01-120-2807: 5330-00-171-9220, 3120-01-583-5442. Verify interchangeability with system specifications before substitution.

What are the specifications of 200-957?

Key specifications for 200-957: General Characteristics Item Description: PLASTIC,POLYCARBONATE; CLEAR; 2.118 IN. MIN 2.122 IN. MAX OD; 0.375 IN. LG; RECESSED SECTION 1.903 IN. MAX OD BY 0.192 IN. MAX LG IN. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com